I had the pleasure of viewing some fake MC $100s...
DATE: 1977 <-- yes, 1977
Serial numbers <-- two of the three were identical, the third was a little different.
Serial number letters <-- all non existant letter combinations
Paper <-- washed and fuzzy
Ink <-- intaglio present, to a degree
I will try to get some digital photos of these in Edmonton next week.
NOTE: I should mention that these were in secure bank custody, and were being delivered to the proper channels.